Top 47
Prep plan
Updated weekly · Last refresh Aug 30

Tessian Backend Engineer Interview Questions

The questions to prepare for a Tessian Backend Engineer interview. Questions from real interview reports rank first. Updated weekly.

47questions
~8htotal time
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1
CodingStart here. 26 questions + 1 drill · ~286 min
2
System Design6 questions · ~64 min
Rate-Limiting Service DesignMedium

Assesses ability to design scalable request throttling with correctness and performance in mind.

api designscalabilityrate limitingTessian
Microservices Communication PatternsHard

Tests your understanding of microservices communication, reliability, and operational concerns.

architecturemicroservicesTessian
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3
Security & Infrastructure3 questions · ~32 min
Web Stack and Cybersecurity FundamentalsMedium

Evaluates your baseline knowledge across web, system design, and cybersecurity relevant to Tessian.

system designcybersecurityTessian
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4
Behavioral & Leadership9 questions · ~96 min
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5
More topics3 questions · ~32 min
Scale Email Event Ingestion PipelineHard

Design a minimal ingestion pipeline that scales email security telemetry from 25K to 250K events/sec with <3 minute freshness.

InfrastructureStream ProcessingBatch ProcessingTessian
Optimize Slow Database QueriesMedium

Tests your approach to diagnosing and improving query performance under load.

Performance Tuningdatabase optimizationsqlTessian
Debugging Production in Distributed SystemsHard

Tests your incident debugging workflow, observability use, and systematic root-cause analysis.

production issuesdistributed systemsDebuggingTessian

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Hands-on SQL practiceWrite and run real queries in the editor. 2 drills · ~20 min
The finish line: interview-readyComplete all 47 questions plus 3 hands-on drills to finish this plan.